chore(stack/observability): Update and remove TLS from internal components for now

[NickLarsenNZ]

Part of #327

TLS on the internal components (Loki and Tempo) was becoming painful to manage. I will revisit it later.

I also moved from the loki exporter to the generic OTLP exporter for shipping logs to Loki

[NickLarsenNZ]

Tested with:

helm install --wait 'nifi-operator' \
  --values 'nifi-operator-values.yaml' \
  --version '0.0.0-dev' \
  'oci://oci.stackable.tech/sdp-charts/nifi-operator'

nifi-operator-values.yaml

# Enable the otel-collector sidecar
podAnnotations:
  sidecar.opentelemetry.io/inject: otel-collector-grpc

telemetry:
  consoleLog:
    enabled: true
    # Only emit actionable logs on the console
    level: warn
    format: plain
  otelLogExporter:
    enabled: true
    # We actually don't need to configure the rest of the values here, because we can do so in the OpenTelemetryCollectors
    # and the opentelemetry-operator will add env vars to the containers.
    level: debug
    endpoint: http://localhost:4317 # otel-collector sidecar
  otelTraceExporter:
    enabled: false

Docs updated here: stackabletech/documentation#794